Art of welding metal receptacles



W. WAGN ER ART OF WELDING METAL RECEPTACLES Feb. 5, 1924.

FiledOG't. 5, 1922 elf-fez we 1 Patented Feb. 5, 192 4. H

PATENT OFFICE;

- wAL'rn'a WAGNER, or CHICAGO, armors.

.AB'I. or" wntnme METAL anonrmonns.

Application filed october 5, 1922. Serial No. 592,665.

To all whom it may concern: 7

Be it known that I, WALTER WAGNER, a citizen of Poland, residing at Chica 0, in the county ofCodk and State of I linois, have invented certain new and useful Improvements in the Art of Welding Metal Receptacles, of which the following isa specification. The present invention relates to a device 10 employed by me in the process of manufacturing all metal vacuum bottles and particularly to that stage of the process where-' in the meeting edges of the upper and lower sections of' the inner wall of the bottle are welded together.

- In an application filed by me on March 23, .1922, bearing Serial No. 546,047, for 1mprovements in carafes, there is shown an article embodying a plurality of walls, each. of these walls being in the form of a container itself, each container including an up per and lower half section, having meetin flanges formed thereon ada ted to be welde together. In another app ication' upon the method of manufacturing metal bottles as shown in the above mentioned application, and filed by me on even date herewith, one of the stages therein includes the welding operation for the meeting flanges of the upper and lower sections forming the inner wall of the bottle.

In this process application, I have pointed out that the inner wall of the receptacle is interiorly coated with enamel, by fusion or the like, this enamel coating stage being'preliminary to the welding operation. Heretofore, in the manufacture of bottles similar to the one shown in my application No.

546,447, it has been customary to enamel.

40 the inner wall of the receptacle subsequent l to the welding operation, due to the fact.

t at it is practically an impossibilityto subjectthe sections of the inner wall to the welding operation after the sections have been enameled due to the high degree of heat necessary in the welding operation, which high temperature has a tendency to crack or diffuse the enamel from the metal.

I have found it to be a great advantage in the manufacture of vacuum bottles to coat the sections, formin the'inner wall of the receptacle, interior y preliminary to the welding operation, for in practically every instance where the inner wall is first welded and then coated with enamel the enamel generally shows streaks and blisters due to the fact that when the bottle is placed in the oven for baking the enamel thereon, the steam which creates within the receptacle cannot advantageously escape throu h the small opening in the neck of the bottle. It is therefore, the primar object of the present Invention, to pro uce a device ada ted for use during the weldin stage in t e method of manufacturing a1 metal ing operavacuumbottles, wherein the wel tion may be successively carried on subseguently to the enameling. stage without any v e enamel cracking an er whatsoever of t or b istering.

A further object of the invention is to provide a device adapted to surround the walls of the bottle section for preventing the welding tools from contacting therewith, the device being so arranged as to permit properly welded.

\Vith the above general objects in' view and others that will appear as the-nature of the invention is better understood, the same consists of the novel form, combination and arrangement of parts hereinafter more fully described, shown in the accompanying drawing and claimed. 5 In the drawing, wherein like reference characters designate corresponding parts throughout, The figure is a vertical cross sectional view of the device constructed in accordance with the present invention showing the elements embodying the device set up in position surrounding the walls of the receptacle to be welded, the receptacle being shown in elevation.

With specific reference to the drawing,

there is shown a receptacle. consisting of an upper and lower half section 1 and 2 respectively having formed ,upon their meeting edges radially extending annular flanges 1' and 2' which flanges are adapted to be welded together for forming a single receptacle as shown in the view, it being understood that the receptacle shown in this View is in reality the inner wall of the completed bottle and more fully shown in my above mentioned copending applications.

Surrounding the upper and lower sections forming the receptacle, there is shown a cooling chamber likewise formed of upper and lower half sections 3 and respectively. Each of these sections are in the form of a the meeting edges 'of the section to be .tion being 35 water.

cooling chamber and the sections hollow casting andare so shaped as to snugly engage upon the walls of the sections 1 and 2 forming the bottle. The lower section 4 is adaptedto receive thesimilar lower sec- 5 tion 2 of the bottle and the upper section 3 is adapted for positioning upon the upper section 1 of the receptacle, this upper secprovidcd with a central annular shaped opening 3 for permitting the ready positioning of this'section upon the bottle section 1, the opening 3' permitting passage of the neck of the section 1 therethrough. The edges of the sections 3 and 4 of the cooling chamber contacting with the radially projecting annular flanges 1 and 2 of the upper and lower sections 1 and 2 respectively are suitably journaled as at fil'or permitting the said annular flanges of the bottle section to project outwardly of the walls of the cooling chamherior allowing the projectin" ortion thereof to readily undergo the wlting operation.

As before mentioned the sections forming the coolin chamberare of a hollow casting provi ing for the reception of water or other cooling means to be received therein for conse uently imparting a cooling effect to the we ls thereof for subsequently maintaining the adjacent walls of the receptacle received therein in a cool state. Each of the sections 3 and 4 are provided with inlet and outlet openings-G whereby a forced circulation of cooling fluid maybe maintained therein, thiscooling fluid being preferably From the above description it will be readily understood that the lower section 4 of the cooling chamber is adapted to receive therein the lower section 2 of the receptacle, the annular flange thereof engaging'upon the upper edge of this section,

at winch time the top section 1 of the receptacle may be positioned upon the lower section for suitably receiving the upper section 3 of the cooling chamber. After the of the re.-

ceptacle are half 1 ,aespev' positioned as shown in the drawing, a circulation of cooling medium is maintained in the sections forming the cooling chamber at which time the meeting flanges l and 2 of the sections 1 and 2 may be advantageously welded together without.

any possible chance of the side walls of the receptacle becoming heated due to the heat of the welding tool employed.

Minor changes may be made in the inve'n tion without departing from the spirit and scope thereof as claimed.

What is claimed as new is 1. In the art of welding metal receptacles of the type including an npper'and lower half section having meeting marginal flanges, means positioned upon the receptacle for preventing the heatlng of the same while the ma rginal flanges undergo the welding operation, said means bein so formed as to allow the said marginal flanges to project therefrom.

2. In the art of welding metal receptacles of the type including an upper and lower half section having meeting marginal flanges. means positioned upon the receptacle for preventing the heating of the same while the marginal flanges undergo the welding operation, said means comprising a chamber adapted to receive a. cooling medium therein.

3. In the art of welding metal receptacles of the type including an'upper' and lower section having meeting marginal flanges, means positioned upon the receptacle for preventing the heating of the same while the marginal flanges undergo the welding operation, said means comprising a chamber adapted to receive a cooling me- 

